The company's long-term operation of Dongfeng Cummins, Chongqing Cummins, Foton Cummins series 4BT, 6BT, 6CT, 6L, ISBE, ISLE, ISDE, QSB, QSX, ISF2.8, ISF3.8, ISM, KTA19, TA38, M11, NTA855 four matching engine (piston, piston ring, piston pin, connecting rod, pump, cylinder). Fuel pump, sensor, solenoid valve, generator, starter, cylinder head, cylinder and engine assembly.